The owner of Britain's Got Talent star Princess the Hypnodog also offers sex therapy downloads which promise couples 'total confidence in the bedroom'.

Together with owner Krystyna Lennon, Princess wowed ITV viewers on Saturday night as she put audience members to sleep and even appeared to have head judge Simon Cowell under her spell.

Ms Lennon and Princess have been taking to the stage together with the comedy Hypnodog act for the past two-and-a-half years, but trained hypnotherapist Ms Lennon also offers a more serious service, including selling MP3 downloads to help listeners quit smoking, ease anxiety and boost sexual confidence.

Sold through her website Empower & Enhance, the £45 Sexual Confidence hypnotherapy download boasts that it 'enhances your sexual experience like no way you’ve experienced before', and is '50 shades of the real thing', for 'half the price' of a sex toy.

According to the website, couples using the download have reported benefits including 'total confidence in the bedroom, faster sexual arousal, more intense and longer lasting orgasms' and 'greater sensitivity'.

And there are two different MP3s available, one for single people and another for couples, which she says has been dubbed 'the relationship saver', and is recommended for engagement, wedding or anniversary presents.

Ms Lennon told MailOnline: 'I'm pleased people are discussing the serious side of my work, as Hypnotherapy and Psychotherapy have so many valuable, life changing benefits.

'As well as the sexual confidence therapy I also do so much work with peoples fears, phobias and anxieties, that's my passion, to help as many people as I can.

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'Princess plays a part in this work as her calming nature puts clients at ease, especially children. when your with an animal in the here and now, most of your worries disappear, that's why people have such an affinity with their pets, they have the ability due to their unconditional love to be able to change your mood and state of mind.'

Mother-of-three Ms Lennon, from Leeds, is the niece of Hugh Lennon, who originally founded the first Hypnodog show with his pet Oscar in 1989.

Sold through her website Empower & Enhance, the £45 Sexual Confidence hypnotherapy download boasts that it 'enhances your sexual experience like no way you’ve experienced before'

The 40-year-old stepped in after her uncle, 65, was forced to retire from performing due to ill health and gave up her job to commit to the show full time.

Princess is also related to Oscar, the original Hypnodog, and Ms Lennon claims she has the same hypnotic abilities.

On Saturday night, viewers watched as Ms Lennon and Princess - who regularly perform in university student unions - put members of the audience and hosts Ant and Dec into a trance before convincing them that the number seven did not exist.

But a sceptical Cowell was not convinced with the German Spitz’s powers, until moments later he appeared to fall asleep at his desk.

Together with trained hypnotherapist Ms Lennon, Princess put members of the audience to sleep when they looked into her eyes, leading many viewers to speculate whether it was a hoax

A sceptical Simon Cowell was not convinced with the German Spitz’s powers, until moments later he appeared to fall asleep at his desk

He said: '[It’s] 100 per cent real. I was feeling sleepy and then fell asleep,’ he explained. ‘It's almost like your brain tells you to do something which you shouldn't be doing but you just go along with it. The next thing is, you've actually fallen asleep.

'I always said I wanted to find a cat that could play the guitar,’ he added. ‘I think we've done pretty well finding a dog that can hypnotise people! I just want to own the dog.

'I could literally rule the world with this dog because all it does is stare at you and you do whatever it wants.'

Ms Lennon and Princess sailed through to the next round of the contest, giving them a chance at performing at the Royal Variety Show later in the year.

MailOnline has contacted a representative of Ms Lennon for comment.

Princess the 'hypnodog' HYPNOTISES live crowd

Princess impressed the Britain's Got Talent panel, made up of David Walliams, Alesha Dixon, Amanda Holden and Simon Cowell